if i knew where they were buried i would put them out with my 1x1 search coil i know that but the area is too big with rocks and trees and dificult to search with coil so i have to take a detection first from a pd device which will leade me near to the buried aluminum boxes 10-20 meters and then pulse detector will do the job , detection is everything my friend , i need something to sniff aluminum and maybe there some boxes without ruber cover and there is contact with the ground , i'm listening anything !!
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